A review on cement degradation under CO2-rich environment of sequestration projects

•Global warming arising from the release of greenhouse gasses into the atmosphere.•Cement degradation due to exposure to supercritical CO2 is a complicated issue.•A review on changes in physical properties of cement was provided.•It was indicated that static tests condition is closer to reservoir condition.•Adding pozzolanic material can enhance the cement resistance against CO2.

Global warming arising from the release of greenhouse gasses into the atmosphere is one of the biggest issues attracting a lot of attention. One of the conventional problems in sequestration projects is the degradation of Portland cement due to its exposure to supercritical CO2. This paper gives a review on the laboratory work performed to understand changes in the mechanical and transport properties of cement when it is in a CO2 rich environment. The results obtained indicated that pozzolanic material could be useful in enhancing the cement resistance against CO2, although more studies are still required to confirm this conclusion.

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